The 2.0s have a different kind of Velcro. The 3.0s Velcro lasts longer. Cotton Babies sells a refresher kit that you can replace the Velcro if you want. They are still VERY usable as they are now.
Mary Lyn, wife of The LOVE of my Life, cloth diapering, nursing, homeschooling mother of 4 girls-- 05/03, 12/04, 05/06, 9/30/11 and 2 boys 03/08 and 11/09